Lead a crew of cheerful dwarves deep underground. Dig, build rooms, forge relics and send out expeditions while your mine keeps working, even when you're away. Reach depth 20 in about 12 to 15 hours, then keep digging as far as you like, as the journey doesn't end there!

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Early Access Game

Get instant access and start playing; get involved with this game as it develops.

Note: Games in Early Access are not complete and may or may not change further. If you are not excited to play this game in its current state, then you should wait to see if the game progresses further in development. Learn more

Leaving Early Access: Q4 2026

What the developers have to say:

Why Early Access?

“Mithril & Mud is a content-rich incremental/idle game with deep interlocking systems. Early Access lets me gather player feedback on pacing, balance, and progression — things that are nearly impossible to tune in isolation. Input directly shapes the game. Balancing and End Game aspects are top priority. ”

Approximately how long will this game be in Early Access?

“Estimated 6-8 months, depending on player feedback and the scope of changes needed. Early access is critical due to the intense balancing feedback needed with the major variety of ways a play can progress. ”

How is the full version planned to differ from the Early Access version?

“We plan to significantly expand the endgame experience beyond Depth 20. Currently, post-victory play relies on numerical scaling, and we want to change that by introducing new rooms, mechanics, and meaningful content that unlock at deeper depths. We plan to rework the challenge system with engaging modifiers and unique rewards, add new prestige and ascension perks to deepen the meta-progression loop, and expand mythic upgrade paths so veteran players have fresh goals to pursue rather than simply pushing numbers higher.

We plan to make key moments in the game feel more impactful. This includes an interactive victory event at Depth 20 that gives players a memorable, playable experience rather than just a summary screen. We also plan to introduce new boss encounters and story-driven events at milestone depths, as well as expand the existing troll and Lithodore encounters with new mechanics as players push deeper.

We plan to use Early Access feedback to guide a thorough economy and balance pass, including shadowsteel tuning, quest reward scaling, and endgame cost curves. Quality-of-life improvements and additional automation options will be shaped directly by what the community asks for. We also plan to upgrade the visual presentation of the central mine area, add additional music and sound design, continue refining localization across all 10 supported languages, and explore bringing the game to the Steam Deck.”

What is the current state of the Early Access version?

“The game is fully playable from start to depth 20, with 13 mine rooms, prestige, ascension, a skill tree, trade systems, expeditions, daily quests, achievements, and Steam Cloud saves. All core systems are complete and stable. ”

Will the game be priced differently during and after Early Access?

“The game will be available at a lower price during Early Access. The price will increase at full release to reflect the additional content and polish added during the Early Access period. If you buy during Early Access, you keep the game at the lower price. ”

How are you planning on involving the Community in your development process?

“Player feedback is central to development. A Steam Community discussion board will be active for bug reports, feature suggestions, and balance feedback. Updates will be posted regularly with patch notes detailing what changed and why. Balance adjustments to depth scaling, resource pacing, and progression systems will be driven directly by player experience and feedback. ”
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About This Game

Dig deep. Build big. Keep going.

Mithril & Mud is a dwarven mining incremental game. Start with a pickaxe and a patch of stone, and build it into a busy underground hold running on mithril, shadowsteel and old rune magic.

Mine the Depths

Dig down through the depths. Each new level opens up new rooms, resources and trouble, like cave-ins, trolls and worse. Reach depth 20 in about 12 to 15 hours, then keep digging as far as you like.

Build Your Hold

Build and upgrade 13 rooms, from the Smelter and Lumber Mill to the Runic Workshop and the Dark Forge. Put your dwarves to work, tune your production chains and watch the hold fill up.

Automate Everything

Unlock auto-miners, auto-workers and room assignments that keep things running on their own. Your mine keeps working while you're away, and the resources are waiting when you get back.

Start Over, Stronger

Start a New Dig to earn Ancestral Knowledge that carries over to every run. Ascension adds a whole new layer for players who want to go even further.

Plenty to Dig Into

  • Skill trees, artifacts, gems and runestones
  • Trade with foreign nations and send out caravans
  • Hire mercenaries and defend against cave-ins
  • Daily quests, challenges and expeditions
  • Tame beasts for passive bonuses
  • Endgame upgrades for the long haul

System Requirements

    Minimum:
    • OS: Windows 10 64-bit
    • Processor: Dual-core 2.0 GHz
    • Memory: 2048 MB RAM
    • Graphics: OpenGL 3.3 compatible
    • DirectX: Version 11
    • Storage: 500 MB available space
    Recommended:
    • OS: Windows 10/11 64-bit
    • Processor: Quad-core 2.5 GHz
    • Memory: 4096 MB RAM
    • Graphics: Vulkan-compatible GPU
    • DirectX: Version 12
    • Storage: 500 MB available space
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